gravity specificf crushed aggregate irc

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3. Target average flexural strength for all A, B and C mixes S = S+ Zq =4.5 + 1.96 x 0.40 = 5.3 N/mm 2 at 28 days age 4. For Mix A, B and C free W/C ratio with crushed aggregate and required average flexural target strength of 5.3 N/mm 2 at 28 days from Fig. 1 Curve D found to be 0.42. This is lower than specified maximum W/C ratio value of 0.45 for OPC and 0.50 for PPC.

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